Thanks to all. Space as far as width is no issue. Planning to use Ebb and Cap with I believe 2 gal buckets. Rockwool (Grodan mini-cubes) as the medium covered with the "the rock that doesn't roll" to prevent algae. A couple 600 watt HPS. The problem is ceiling height. I only have about 78 inches to work with. I heard topping or fimming with a short veg time effects yield. I'm just scared that not topping will cause height issues. Could I veg week 1, top week 2, and flip after week 3 and get a decent yield. Strains considering G-13 Pineapple Express, Cali Connection Sour OG (Aka 818 Headband), Cali Connection Larry OG, TH Seeds Chocolate Chunk, unknown Critical.